On Sun, 2023-06-04 at 06:51 -0400, Jeffrey Walton wrote: > Altivec detection on Linux is relatively easy nowadays using > getauxval(). From ... > instead of using a query via getauxval(), OpenSSL does a runtime probe > by executing an Altivec instruction. If a SIGILL is encountered, then > Altivec is false. These are all obsoleted by GCC function multi-versioning where possible and a manual ifunc that uses the __builtin_cpu_supports builtin function where not possible. https://wiki.debian.org/InstructionSelection The comment about GCC support for PowerPC being spotty is probably incorrect, it would be great if that could be verified though. -- bye, pabs https://wiki.debian.org/PaulWise
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